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// RUN: mlir-opt %s -test-vector-transferop-opt | FileCheck %s
// CHECK-LABEL: func @forward_dead_store
// CHECK-NOT: vector.transfer_write
// CHECK-NOT: vector.transfer_read
// CHECK: scf.for
// CHECK: }
// CHECK: vector.transfer_write
// CHECK: return
func.func @forward_dead_store(%arg0: i1, %arg1 : memref<4x4xf32>,
%v0 : vector<1x4xf32>, %v1 : vector<1x4xf32>, %i : index) {
%c1 = arith.constant 1 : index
%c4 = arith.constant 4 : index
%c0 = arith.constant 0 : index
%cf0 = arith.constant 0.0 : f32
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
%0 = vector.transfer_read %arg1[%c1, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
%x = scf.for %i0 = %c0 to %c4 step %c1 iter_args(%acc = %0)
-> (vector<1x4xf32>) {
%1 = arith.addf %acc, %acc : vector<1x4xf32>
scf.yield %1 : vector<1x4xf32>
}
vector.transfer_write %x, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
return
}
// CHECK-LABEL: func @forward_nested
// CHECK: vector.transfer_write
// CHECK: vector.transfer_write
// CHECK: scf.if
// CHECK-NOT: vector.transfer_read
// CHECK: }
// CHECK: vector.transfer_write
// CHECK: return
func.func @forward_nested(%arg0: i1, %arg1 : memref<4x4xf32>, %v0 : vector<1x4xf32>,
%v1 : vector<1x4xf32>, %i : index) {
%c0 = arith.constant 0 : index
%c1 = arith.constant 1 : index
%cf0 = arith.constant 0.0 : f32
vector.transfer_write %v1, %arg1[%i, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
%x = scf.if %arg0 -> (vector<1x4xf32>) {
%0 = vector.transfer_read %arg1[%c1, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
scf.yield %0 : vector<1x4xf32>
} else {
scf.yield %v1 : vector<1x4xf32>
}
vector.transfer_write %x, %arg1[%c0, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
return
}
// Negative test, the transfer_write in the scf.if region block the store to
// load forwarding because we don't recursively look into the region to realize
// that the transfer_write cannot reach the transfer_read.
// CHECK-LABEL: func @forward_nested_negative
// CHECK: vector.transfer_write
// CHECK: scf.if
// CHECK: vector.transfer_read
// CHECK: } else {
// CHECK: vector.transfer_write
// CHECK: }
// CHECK: vector.transfer_write
// CHECK: return
func.func @forward_nested_negative(%arg0: i1, %arg1 : memref<4x4xf32>,
%v0 : vector<1x4xf32>, %v1 : vector<1x4xf32>, %i : index) {
%c0 = arith.constant 0 : index
%c1 = arith.constant 1 : index
%cf0 = arith.constant 0.0 : f32
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
%x = scf.if %arg0 -> (vector<1x4xf32>) {
%0 = vector.transfer_read %arg1[%c1, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
scf.yield %0 : vector<1x4xf32>
} else {
vector.transfer_write %v1, %arg1[%i, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
scf.yield %v1 : vector<1x4xf32>
}
vector.transfer_write %x, %arg1[%c0, %i] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
return
}
// CHECK-LABEL: func @dead_store_region
// CHECK: vector.transfer_write
// CHECK: scf.if
// CHECK: } else {
// CHECK: vector.transfer_read
// CHECK: }
// CHECK: scf.if
// CHECK-NOT: vector.transfer_write
// CHECK: }
// CHECK: vector.transfer_write
// CHECK-NOT: vector.transfer_write
// CHECK: vector.transfer_read
// CHECK: return
func.func @dead_store_region(%arg0: i1, %arg1 : memref<4x4xf32>,
%v0 : vector<1x4xf32>, %v1 : vector<1x4xf32>, %i : index)
-> (vector<1x4xf32>) {
%c0 = arith.constant 0 : index
%c1 = arith.constant 1 : index
%cf0 = arith.constant 0.0 : f32
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
%x = scf.if %arg0 -> (vector<1x4xf32>) {
scf.yield %v1 : vector<1x4xf32>
} else {
%0 = vector.transfer_read %arg1[%i, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
scf.yield %0 : vector<1x4xf32>
}
scf.if %arg0 {
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
}
vector.transfer_write %x, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
vector.transfer_write %x, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
%1 = vector.transfer_read %arg1[%i, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
return %1 : vector<1x4xf32>
}
// CHECK-LABEL: func @dead_store_negative
// CHECK: scf.if
// CHECK: vector.transfer_write
// CHECK: vector.transfer_read
// CHECK: } else {
// CHECK: }
// CHECK: vector.transfer_write
// CHECK: return
func.func @dead_store_negative(%arg0: i1, %arg1 : memref<4x4xf32>,
%v0 :vector<1x4xf32>, %v1 : vector<1x4xf32>, %i : index) {
%c0 = arith.constant 0 : index
%c1 = arith.constant 1 : index
%cf0 = arith.constant 0.0 : f32
%x = scf.if %arg0 -> (vector<1x4xf32>) {
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
%0 = vector.transfer_read %arg1[%i, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
scf.yield %0 : vector<1x4xf32>
} else {
scf.yield %v1 : vector<1x4xf32>
}
vector.transfer_write %x, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
return
}
// CHECK-LABEL: func @dead_store_nested_region
// CHECK: scf.if
// CHECK: vector.transfer_read
// CHECK: scf.if
// CHECK-NOT: vector.transfer_write
// CHECK: }
// CHECK: vector.transfer_write
// CHECK: }
// CHECK: return
func.func @dead_store_nested_region(%arg0: i1, %arg1: i1, %arg2 : memref<4x4xf32>,
%v0 : vector<1x4xf32>, %v1 : vector<1x4xf32>, %i : index) {
%c0 = arith.constant 0 : index
%c1 = arith.constant 1 : index
%cf0 = arith.constant 0.0 : f32
scf.if %arg0 {
%0 = vector.transfer_read %arg2[%i, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
scf.if %arg1 {
vector.transfer_write %v1, %arg2[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
}
vector.transfer_write %v0, %arg2[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
}
return
}
// CHECK-LABEL: func @forward_dead_store_negative
// CHECK: vector.transfer_write
// CHECK: vector.transfer_write
// CHECK: vector.transfer_write
// CHECK: vector.transfer_write
// CHECK: vector.transfer_read
// CHECK: vector.transfer_write
// CHECK: return
func.func @forward_dead_store_negative(%arg0: i1, %arg1 : memref<4x4xf32>,
%v0 : vector<1x4xf32>, %v1 : vector<1x1xf32>, %v2 : vector<1x4xf32>, %i : index) -> vector<1x4xf32> {
%alias = memref.subview %arg1[0, 0] [2, 2] [1, 1] :
memref<4x4xf32> to memref<2x2xf32, strided<[4, 1]>>
%c1 = arith.constant 1 : index
%c4 = arith.constant 4 : index
%c0 = arith.constant 0 : index
%cf0 = arith.constant 0.0 : f32
vector.transfer_write %v0, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
// blocking write.
vector.transfer_write %v1, %alias[%c0, %c0] {in_bounds = [true, true]} :
vector<1x1xf32>, memref<2x2xf32, strided<[4, 1]>>
vector.transfer_write %v2, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
// blocking write.
vector.transfer_write %v1, %alias[%c1, %c0] {in_bounds = [true, true]} :
vector<1x1xf32>, memref<2x2xf32, strided<[4, 1]>>
%0 = vector.transfer_read %arg1[%c1, %c0], %cf0 {in_bounds = [true, true]} :
memref<4x4xf32>, vector<1x4xf32>
vector.transfer_write %v2, %arg1[%c1, %c0] {in_bounds = [true, true]} :
vector<1x4xf32>, memref<4x4xf32>
return %0 : vector<1x4xf32>
}
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